4000 kVA (4 MVA) Substation Transformer
- Primary Voltage Ratings: Up to 44 kV
- Secondary Voltage Ratings: 600V/480V/240/2.4kV/12.47kV,etc.
- CONNECTION TYPE: Dyn1,YNd1,Dy11y11,YNyn0
- TYPE: Substation
- BIL: 30-125kV
- Standards: CSA C88, IEEE C57
- Application: Distribution system
- Power Rating: 4000kVA/ 4MVA
- Certificate: UL, cUL, CSA
Daelim Transformer's 4000 kVA (4 MVA) substation transformer offers low discharge, low loss, low noise, and high reliability. Flexible core/coil construction meets dimensional requirements. Customizable with cover-mounted or side-mounted bushings. Complies with UL/cUL, CSA standards, and third-party test reports. At Daelim Transformer, we understand that every project comes with unique requirements. That's why we offer customizable transformers, allowing you to adjust voltage, capacity, and parameters to perfectly align with your needs.
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4000 kVA Substation Transformer
The substation transformer has a primary voltage of 25kV and a secondary voltage of 600V. It has a capacity of 3000 kVA for ONAN (Oil Natural Air Natural Cooling) cooling and 4000 kVA for ONAF (Oil Natural Air Forced) cooling. The Dyn1 connection group specifies the winding connections of the transformer, and the outlet structure is designed for high and low voltage side-mounting.
The transformer features a sealed cover for protection and safety. It uses regular mineral oil (45#) as the insulating liquid. The cooling method employed is ONAN/ONAF, combining natural cooling with forced air cooling based on operating conditions.
The conductor material for the high voltage (HV) winding and low voltage (LV) winding is aluminum. The transformer will be filled with Type II mineral oil containing less than 2 ppm PCB. The liquid level at 25℃ is 270 mm below the top of the highest manhole flange, with a 10 mm change per 10℃ change in average liquid temperature.
The transformer tank is designed to withstand complete vacuum and internal pressure of 7 psi. It must not be energized from any voltage source when de-energized tap changers are operated. The transformer is designed for operation between pressure limits of 10 psi positive and 8 psi negative. It meets the energy efficiency requirements of CAN/CSA-C802.3 and is built to CSAC88 standards.
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4000 kVA Transformer Windings
Other 4000 kVA Substation Transformer
33(13.2) kV 4000 kVA Transformer
The SL-4000-33(13.2)-0.6 is a dual high voltage transformer with voltage levels of 33kV and 13.2kV. It features a dual voltage switch and five adjustable voltage gears. The cooling method is ONAN, and its capacity is 4000kVA. The high and low voltage windings are made of aluminum. The low voltage is 600Y/347V, and the connection group is Dyn11.
Specifications:
- Tank & accessories weight: 2450kg
- Oil weight: 2300L
- Total weight: 9000kg
- Transformer dimensions: Length 2350mm, Width 2150mm, Height 2290mm
- Built to IEEE C57.12.36 standard
- UL listed
- Efficiency: 99.37%
- Impedance value: 5.75%
- Color: ANSI Grey70#
- Number of tap positions: 5
- Maximum tank pressure: 10 psi positive, 8 psi negative
- Fluid level: 10.0 inches from the top of the hand hole at 25℃
- Fluid level change: 0.4 inches per 10°C
- Tank designed for 7 psi vacuum filling
- Installation and operating manual: DBT-22001M
- Designed for 4000 kVA at 33000 (13200) volts with tap changer in the 33000 (13200) volt position for 600Y/347 secondary voltage
- Contains no detectable levels of PCB (less than 1 ppm) at the time of manufacture.
4000（5333）kVA Transformer
The SL-4000 (5333)-25-0.6 is a sidewall-mounted bushing transformer designed to meet CSA standards for use in the Canadian market. It has a power rating of 4000kVA for self-cooling (ONAN) and 5333kVA for air-cooling (ONAF). The HV bushing is rated at 25kV and 208A with a spade 4 Hole configuration, while the LV bushing has 10 holes. The transformer includes two sets of fans for cooling.
Transformer technical data specifications
| Standard | CSA C88 | Width(mm) | 2260 |
| Method | ALUMINIUM | Length(mm) | 2950 |
| Power rating | 4000/5333kVA | Height(mm) | 2200 |
| Vector Group | Dyn1 | Efficiency | 99.40% |
| HV | 25000V | Impedance | 5.75% |
| LV | 600V | Color | ANSI Grey 70 |
| Oil weight | 1590KG | Winding material | ALUMINIUM |
| Total weight | 7600KG | No. OF TAP POSITION | 5 |
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